(PHP 5 >= 5.2.0, PHP 7, PHP 8)
memory_get_peak_usage — Returns the peak of memory allocated by PHP
Returns the peak of memory, in bytes, that's been allocated to your PHP script.
Set this to
true to get the real size of memory allocated from
system. If not set or
false only the memory used by
emalloc() is reported.
Returns the memory peak in bytes.